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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=62" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">用理论模型介绍激光器不同层次的物理特性及规律 </h1> <p class="xg1"> 时间：2023-8-18 09:20<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(910)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=9842&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a></p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=62" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>关于光与组成物质粒子之间的相互作用，目前已经发展出了四种理论模型介绍激光器不同层次的物理特性及物理规律，分别为经典理论、半经典理论、量子理论及速率方程理论。</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><p style="margin: 0px 8px 24px; padding: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; color: rgba(0, 0, 0, 0.901961); font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; background-color: rgb(255, 255, 255); visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; font-size: 16px; visibility: visible;"> 关于光与组成物质粒子之间的相互作用，目前已经发展出了四种<a href="http://theory.oecr.com" target="_blank" class="relatedlink">理论</a>模型介绍<a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a>器不同层次的<a href="http://theory.oecr.com" target="_blank" class="relatedlink">物理</a>特性及物理规律，分别为经典理论、半经典理论、量子理论及速率方程理论。</span></p><p style="margin: 0px 8px 24px; padding: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; color: rgba(0, 0, 0, 0.901961); font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; background-color: rgb(255, 255, 255); visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; font-size: 16px; visibility: visible;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; letter-spacing: 0.544px; visibility: visible;"> 1，</span>经典理论是将电磁场用经典的电动力学描述，原子系统中运动的<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电子</a>用经典力学的振子模型描述。该理论可以较好地定性解释原子的自发辐射、谱线宽度、物质对光的吸收以及色散等现象。</span></p><p style="margin: 0px 8px 24px; padding: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; color: rgba(0, 0, 0, 0.901961); font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; background-color: rgb(255, 255, 255); visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; font-size: 16px; visibility: visible;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; letter-spacing: 0.544px; visibility: visible;"> 2，</span>半经典理论也称激光器的兰姆理论，是将原子的运动用量子力学的理论进行描述，而电磁场仍用经典的电动力学描述。相较于经典理论，半经典理论可以更好地解释激光的大部分现象，例如激光的增益饱和效应、反转粒子数烧孔效应和模式的相位锁定效应等。</span></p><p style="margin: 0px 8px 24px; padding: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; color: rgba(0, 0, 0, 0.901961); font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; background-color: rgb(255, 255, 255); visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; font-size: 16px; visibility: visible;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; letter-spacing: 0.544px; visibility: visible;"> 3，</span>量子理论是将电磁场与原子当作统一的物理体系，并将电磁场与原子都做量子化处理。该过程可以很好地解释激光振荡过程中出现的线宽极限及量子起伏（噪声和相干性）。值得一提的是虽然量子理论在原则上可以表述激光器的所有特征，但实际应用中没有必要使用该理论解释所有的激光特征。用简化的理论解释激光某些特性和规律的同时，还可以避免计算的复杂性，使结构更加的明了。</span></p><p style="margin: 0px 8px 24px; padding: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; color: rgba(0, 0, 0, 0.901961); font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; background-color: rgb(255, 255, 255); visibility: visible; 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</div> <input type="hidden" name="portal_referer" value="portal.php?mod=view&aid=9842#comment"> <input type="hidden" name="referer" value="portal.php?mod=view&aid=9842#comment" /> <input type="hidden" name="id" value="0" /> <input type="hidden" name="idtype" value="" /> <input type="hidden" name="aid" value="9842"> <input type="hidden" name="formhash" value="90fa199d"> <input type="hidden" name="replysubmit" value="true"> <input type="hidden" name="commentsubmit" value="true" /> <p class="ptn"><button type="submit" name="commentsubmit_btn" id="commentsubmit_btn" value="true" class="pn"><strong>评论</strong></button></p> </form> <a name="comment_anchor_33633"></a> <dl id="comment_33633_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(33633, '9842');">引用</a> </span> <a href="http://club.oecr.com/space-uid-85747.html" class="xi2 xw1" c="1">feixiangxiaoche</a> <span class="xg1 xw0">2023-8-18 10:50</span> </dt> <dd>我会向同学推荐的！</dd> </dl><a name="comment_anchor_33632"></a> <dl id="comment_33632_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(33632, '9842');">引用</a> </span> <a href="http://club.oecr.com/space-uid-24553.html" class="xi2 xw1" c="1">FataMorgana</a> <span class="xg1 xw0">2023-8-18 10:20</span> </dt> <dd>看起来不错</dd> </dl><a name="comment_anchor_33631"></a> <dl id="comment_33631_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(33631, '9842');">引用</a> </span> <a href="http://club.oecr.com/space-uid-25371.html" class="xi2 xw1" c="1">eric_cong</a> <span class="xg1 xw0">2023-8-18 09:50</span> </dt> <dd>看起来好像不错的样子</dd> </dl><a name="comment_anchor_33630"></a> <dl id="comment_33630_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(33630, '9842');">引用</a> </span> <a href="http://club.oecr.com/space-uid-74949.html" class="xi2 xw1" c="1">nanomod</a> <span class="xg1 xw0">2023-8-18 09:20</span> </dt> <dd>支持，赞一个</dd> </dl><a name="comment_anchor_33629"></a> <dl id="comment_33629_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(33629, '9842');">引用</a> </span> <a href="http://club.oecr.com/space-uid-10601.html" class="xi2 xw1" c="1">它山之石</a> <span class="xg1 xw0">2023-8-18 09:20</span> </dt> <dd>不错 支持下</dd> </dl></div> </div> <!--[diy=diycontentcomment]--><div id="diycontentcomment" class="area"></div><!--[/diy]--> </div> <div class="sd pph"> <div class="drag"> <!--[diy=diyrighttop]--><div id="diyrighttop" class="area"><div id="frameorJGGx" class="sy_ltdr frame move-span cl frame-1"><div class="frame-title title"><span class="titletext">社区成员推荐</span></div><div id="frameorJGGx_left" class="column frame-1-c"><div id="frameorJGGx_left_temp" class="move-span temp"></div><div 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